A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6645-01-516-3739
NSN 6135-01-290-6487
NSN 5835-01-258-7866
NSN 6610-01-510-2302
NSN 5935-00-239-0410
NSN 5975-01-504-2425
NSN 5996-00-538-7829
NSN 6645-01-381-0656
NSN 5960-01-476-5686
NSN 5935-01-095-1563
NSN 5835-00-085-2287
NSN 6105-01-544-1544